The short answer
Start with an old pump and a hose that has hardened: on Marathon washers it outranks the pump filter, and both come a long way before a spin abandoned for balance rather than for water. Age moves this ranking: on a machine that has outlived several kitchens, the parts that have been working longest come before the electronics, of which there is very little to fail. Most of what follows is owner-checkable, and the point where that stops is stated plainly below.
What you observe
- The cycle ends with water in the drum — The clearest version of the fault: the machine has given up on the drain step.
- The door will not unlock — Water in the tub holds the lock closed by design, on every machine of this class.
- Water comes back into the drum after it empties — That is siphoning from a drain hose set too low or pushed too far into the standpipe.
- NEAR MISS — it never fills in the first place — A fill fault presents as a stalled cycle rather than standing water; look at the taps and the inlet hoses instead.
Causes, most likely first on Marathon
- An old pump and a hose that has hardened — Age changes what is likely: the filter still blocks, but the pump and the hose are now genuine candidates rather than remote ones, and a hose that has set in a bend will not free up when you straighten it. First, and the rest of the order follows from it: age puts the pump and the hose in play here, where on a newer machine they would sit much further down.
- The pump filter — The filter is there to stop debris reaching the pump, and it does its job by filling up.
- The drain pump itself — Pumps fail in two ways and the sound tells you which. Placed there because it is third because it is behind the filter in the path and because the sound it makes separates it from everything in front of it.
- A spin abandoned for balance rather than for water — If the machine drains properly and simply will not spin, the water is not the problem. Bottom of the list, deliberately, and this placement is a fork in the diagnosis rather than a likelihood: if the tub is empty, everything above this line is irrelevant.
Check in this order, and why
- First: Feel the hose for hardness at the bend — A hose that has set in a curve and creaks when moved is restricting even when it looks open. It is first because it is the cheapest of the three to settle.
- Second: Open the pump filter — Have a shallow tray ready — the chamber holds a surprising amount of water, and it may be hot.
- Third: Listen at the drain step — A straining hum is a jam; silence is electrical. Either way the diagnosis is made from the front of the machine.
What an owner can safely check
- Drain and clear the pump filter — With the washer unplugged, put towels down, unscrew the filter cap slowly, and let it drain into a tray a little at a time.
Tools: shallow tray, towelsAbout 25 min
- Run a spin-only cycle on a redistributed load — Spread the load evenly, close the door and select spin alone.
About 15 min
- STOP HERE if the next step needs a meter on live terminals — That is the line between an owner check and a service call, and it is not worth crossing.
Before any panel comes off
Safety
Unplug the appliance or switch off its breaker before removing any panel, and treat every capacitor as still charged: a capacitor can hold a charge after the power is off. Never defeat the lid or door interlock to make a machine run with the door open — it cuts the drive for a reason, and a turning drum does not stop for a hand.
When to call a technician
The owner side of this ends at the pump filter and the hose. Beyond that the machine has to come away from the wall, go onto its back, and be worked on with the water out of it.
Nearest pages of this class
What this page does not cover
This is generalized information for Marathon washers as a class, not for one family or one model. No family- or model-specific page for this brand and appliance is published here yet, so nothing narrower is linked; when one is, it becomes the more specific answer and this page will point to it. Deliberately absent: part numbers, wiring colours and the order the panels come off in — those belong with a named family.
